It's New Year Day, and you want to wish your friend
May your new year be full of happiness and success.
Do you say
Möge dein neues Jahr voller Glück und Erfolg sein
? I'm not sure if "möge" is correct or make it sound too formal here.
You can say
Ich wünsche dir ein neues Jahr voller Glück und Erfolg.
which conveys the same sense, but wouldn't be a direct translation.
Also, any suggestions for other ways to say this?